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प्रश्न
State one relevant observation for the following:
At the anode when aqueous copper sulphate solution is electrolysed using copper electrodes.
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उत्तर १
Copper anode itself ionizes to give Cu2+ ions.
\[\ce{Cu - 2e- -> Cu^{2+}}\]
उत्तर २
The anode slowly dissolves, but the colour of copper sulphate does not change. The copper anode ionises, producing Cu2+ ions that enter the CuSO4 solution. It accepts electrons to form Cu2+.
संबंधित प्रश्न
Identify the substance underlined, in the following case
The electrolyte used for electroplating an article with silver.
Name the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.
Give one word or phrase for the following:
Electrolytic deposition of a superior metal on a baser metal.
Give reason for the following:
The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.
Explain the term:
Electro refining
How is impure copper purified by electrolysis ? Explain.
The following question relate to the electroplating of an article with silver.
Name the electrode formed by the article which is to be plated.
The following question relate to the electroplating of an article with silver.
What should be the nature of the anode?
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
What ions must be present in a solution used for electroplating a particular metal?
